Absolute rate constants for hydrogen abstraction from n-Bu3SnH by a number of partially-fluorinated and fully fluorinated n-alkyl radicals have been measured. The C-H and C-C bond dissociation energies for a number of pertinent hydrofluorocarbons have been calculated by DFT. The rate data are compared with those for addition of the same radicals to styrene, and the reactivities of these radicals are discussed in terms of their electronegativies, their structure and the thermodynamics of their reactions.